Definition of matter; solid, liquid and gas; characteristics - shape, volume, density; change of statemelting (absorption of heat), freezing, evaporation (cooling by ...

NCERT Class 9 Science Book PDF: The National Council of Educational Research and Training (NCERT) has revised the Class 9 Science NCERT Book with the deletion of certain chapters and topics to reduce ...

The Central Board of Secondary Education (CBSE) will introduce two-tier difficulty levels—standard and advanced—for science and social science for class 9 from the 2026-27 academic year and class 10 ...

CBSE has increased the number of competency-based questions in the exam pattern thus making it more important for students to get acquainted with the syllabus for all subjects. Below we have provided ...